CVE-2020-11991

7.5

CVSS
High

PUBLISHED

When using the StreamGenerator, the code parse a user-provided XML. A specially crafted XML, including external system entities, could be used to...

Exploited in the wild Remote Low complexity No user interaction

Vendor: Apache
Product: Cocoon
Published: Sep 11, 2020
EPSS: —

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Description

When using the StreamGenerator, the code parse a user-provided XML. A specially crafted XML, including external system entities, could be used to access any file on the server system.

nuclei_scanner

CVSS scores

CVSS v3.1 7.5 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 5.0 Medium

AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitation status

Exploited in the wild

Recorded 2025-07-29 00:00:00 UTC · The Shadowserver (via CIRCL)

References

https://lists.apache.org/thread.html/r77add973ea521185e1a90aca00ba9dae7caa8d8b944d92421702bb54%40%3Cusers.cocoon.apache.org%3E

Known exploited vulnerability sources

Catalogues that list this CVE as a known exploited vulnerability.

Source	Added
The Shadowserver (via CIRCL) First	2025-07-29 00:00 UTC

Scanner integrations

Scanner	Reference	Detected
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-11991.yaml	Apr 25, 2025

Vulnerability detail